by Gelogia Team | Mar 5, 2025 | Stratigraphy
Conglomerate is a sedimentary rock formed from rounded pebbles or clasts held together by a finer matrix. Its classification depends on pebble composition, sorting, and matrix abundance. Well-sorted conglomerates signify gradual deposition by water currents, while...
by Gelogia Team | Mar 3, 2025 | Uncategorized
Gravel: Gravel is an unconsolidated accumulation of rounded fragments greater than 2 mm in diameter. Wentworth (1922) classified gravel into four types on the basis of size (diameter in mm) (a)...
by Gelogia Team | Mar 2, 2025 | Stratigraphy
Sedimentary Structure: These are large-scale features or patterns of sediments that are produced as a result of the migration of bed forms. Classification of primary Sedimentary Structure: The most simple classification of sedimentary structure is: Primary structure:...
by Gelogia Team | Mar 1, 2025 | Historical Geology
The Cenozoic succession of Bangladesh has been differentiated into a number of biostratigraphic units, viz., assemblage zone based on first assemblage demarcation (FAD) line, last assemblage demarcation (LAD) line, acme, and ranges of various marker palynotaxa in the...
by Gelogia Team | Feb 28, 2025 | Historical Geology
Depending on the geomorphological features, the coastal region of Bangladesh can broadly be divided into the following three regions: The Eastern Region: The eastern coastline of Bangladesh, from the big Feni River to Badar Mokam (the southern tip of the mainland)...
